If the leg cramps are caused by calcium deficiency, you can take calcium tablets. If the leg cramps are caused by other reasons, you should give appropriate treatment according to the cause of the leg cramps instead of blindly taking calcium supplements. There are many reasons for leg cramps, most of which are caused by poor sleeping posture at night, or by increased lactic acid in the legs due to cold legs or excessive exercise; or by arterial occlusive diseases of the lower limbs. If leg cramps are caused by poor sleep posture at night, they can be relieved after stretching; if they are caused by overwork or localized cold, they need to keep warm and avoid overwork; if they are caused by nerve ischemia due to vascular diseases of the lower limbs, such as leg cramps caused by arterial occlusive diseases of the lower limbs, they need to be actively treated, and interventional surgery can be performed to prevent ischemic necrosis of the lower limbs, if necessary. If the symptoms of leg cramps, we suggest that patients improve the relevant examination, and follow the doctor’s instructions for treatment.